Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
BCrawlabilityno robots.txt, sitemap with 5908 URLsREVIEW
robots.txt is optional but recommended. It tells search engine crawlers which pages to index.
No robots.txt — crawlers fetch /robots.txt and get 404; not breaking but means default crawl behavior with no directives or sitemap reference.
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A minimal robots.txt with `User-agent: * / Allow: / / Sitemap: https://example.com/sitemap.xml` covers the basics. Without it, crawlers behave fine but lose the sitemap signal and can't be selectively blocked from crawl-traps.
Source: robotstxt.org
Search engines may not be able to parse the sitemap. Fix XML validation errors.
An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.
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Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.
Source: sitemaps.org / Google Search Central
No robots.txt found
This is fine for most sites — a missing robots.txt allows all crawling by default.
- http://archive.thinkprogress.org/transitioning-thinkprogress-c4b5a2789be0/
- http://archive.thinkprogress.org/cnns-planning-a-2020-lgbtq-forum-here-are-some-issues-advocates-say-the-candidates-should-address-b3edf8acc379/
- http://archive.thinkprogress.org/cnn-climate-forum-democrats-biden-sanders-warren-nuclear-goldman-fundraiser-d82db97b413c/
- http://archive.thinkprogress.org/gop-candidate-fueled-by-outside-money-complains-he-may-lose-because-of-opponents-outside-money-f992ece28850/
- http://archive.thinkprogress.org/to-build-trumps-border-wall-pentagon-will-divert-funds-from-military-schools-and-day-cares-f429b61e59fb/
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations219 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
Recommended actions
- Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
- Enable DNSSEC on your domain for DNS spoofing protection
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+DNS Records4 A records, 88 ms lookupPASS
| A | 108.139.10.40, 108.139.10.81, 108.139.10.19, 108.139.10.29 |
| AAAA | — |
| CNAME | — |
| NS | ns-1440.awsdns-52.org, ns-1872.awsdns-42.co.uk, ns-209.awsdns-26.com, ns-625.awsdns-14.net |
| MX | 0 thinkprogress-org.mail.protection.outlook.com |
| TXT | /74gyD34Mne1AToEtmsH7HhyS87o7/hsT8NCOFUOm/2pD9RbT59otK8NTI68oqp8CvxO95wbv1FfcXhZ... google-site-verification=5dZGQKjgABxs2oiNevH74b-VN8WLL8gCdvy7Y1lmCsg SPF v=spf1 mx ip4:208.87.104.0/22 include:spf.protection.outlook.com include:spfe1.a... v=verifydomain MS=ms33957723 |
| CAA | Lookup not available with standard resolver |
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
A+Redirect ChainNo redirects — direct accessPASS
https://thinkprogress.org
43 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://thinkprogress.org | 200 | 43 ms | HTTP/1.1 | AmazonS3 |
A+Domain Intelligencethinkprogress.org — via GoDaddy.com, LLC, 21 years, 7 months old, hosted on AWSPASS
191 days
December 23, 2026
219 days
Issued by Amazon
21 years, 7 months
Registered December 23, 2004
Not enabled
Protects against DNS spoofing
AWS
ASN AS16509
108.139.10.19
GoDaddy.com, LLC
Expiry timeline
Recommended actions
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.
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DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.
Source: ICANN / RFC 4033
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.
Learn more ▾ ▴
Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.
Source: ICANN / domain-security best practice